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| Address: Zhengzhou Zhongyuan Road on the 20th District Ruhe Tel :0371-68631375 Fax :0371-68630375 Zip code: 450006 Website: www.cavor.net-mail: cavor@cavor.net |
郑州科威奥超硬材料有限公司 Zhengzhou Keweiao Superhard Materials Co.,LTD. |
